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* Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Driftwood Tan Options * TD Series - with damper
see 2700 series)
Countersunk mounting holes with color matching Phillips Pozidriv screws
3% maximum leakage with a pressure differential 3" W
Allows for 4-way airflow
Pressure Relief HD 3530-20X12 Specialty Products * Countersunk mounting holes forh3. Standard Features * 3510 Vertical mount * 3520 Horizontal mount air up * 3530 Horizontal mount air down * Designed to open with negative or positive pressures for intake or exhaust air * Felt edge blades to hold noise to a minimum * Aluminum construction * Blade to blade linkage * 1 4" pivot pins in nylon busings * Maximum size 24 x 24 * Mill finish h3. Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various
US$ 236.00
US$ 140.00
US$ 74.95
US$ 37.99
